Description:Police and family members were asking for the public’s help Thursday in locating a 22-year-old man who disappeared while walking his dog. Darwin Vela was last seen leaving his home in the 2900 block of South Redondo Boulevard about 9 p.m. on Tuesday, according to a news release from the Los Angeles Police Department. A short time later police said the dog returned alone. Vela’s girlfriend, Kelly McLaren, noticed blood on the dog’s leash and called 911.(1:48)